作 者: ;
机构地区: 华南理工大学自动化科学与工程学院
出 处: 《弹性体》 2005年第1期32-35,共4页
摘 要: 对前文发表的非牛顿流体平入口收敛流动的边界流线微分方程进行了分析,求出了当非牛顿指数n=1/3时的入口收敛边界流线方程,及其与n≠1/3时边界流线微分方程的关系。在此基础上,建立了n=1/3时的聚合物流体自然收敛半角方程和收敛区长度方程,并讨论了影响入口流型的主要因素。 In this paper, the differential equation of boundary streamline in planar entry converging flow of non-Newtonian fluids published earlier is analyzed,and an entry converging boundary streamline equation with the non-Newtonian index (n) being equal to 1/3 is derived. The relationship between it and the entry converging boundary streamline equation with n≠1/3 is discussed. On the basis of it, a half natural convergent angle equation and a convergent region length equation with n=1/3 of polymeric fluids are set up, and the main factors affecting entry flow patterns are discussed.